. Text-book of embryology. Embryology. XVI ECHINODEEMATA 493 to extend over the dorsal surface of the stomodaeum, and its posterior end sweeps round to the right, across the ventral surface of the. oesophagus. In this way it is gradually transformed into a cn-cle, the two ends of which meet on the right side of the mouth, which thus becomes completely surrounded. The lobes project into the stomodaeum as tentacles covered by stomodaeal ectoderm. This. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appea


. Text-book of embryology. Embryology. XVI ECHINODEEMATA 493 to extend over the dorsal surface of the stomodaeum, and its posterior end sweeps round to the right, across the ventral surface of the. oesophagus. In this way it is gradually transformed into a cn-cle, the two ends of which meet on the right side of the mouth, which thus becomes completely surrounded. The lobes project into the stomodaeum as tentacles covered by stomodaeal ectoderm. This. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original MacBride, E. W. (Ernest William), 1866-1940; Kerr, John Graham, 1869-; Heape, Walter, 1855-1929. London : Macmillan


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Keywords: ., bookcentury1900, bookdecade1910, bookpubli, booksubjectembryology